Factors responsible for crystal-chemical variations in the solid solutions from illite to aluminoceladonite and from glauconite to celadonite

Drits, Victor A.; Zviagina, Bella B.; McCarty, Douglas K.; Salyn, A. L.

doi:10.2138/am.2010.3300

Cited by 125 publications

(65 citation statements)

References 28 publications

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“…The d 001 value of these illites can be evaluated from the 005 reflection as 9.91À9.95 Å , i.e. much lower than the standard K-illite value of 9.98 Å (Lindgreen et al, 2000), but higher than the measured bentonite value of 9.888 Å , thus indicating an intermediate illite-aluminoceladonite composition (Drits et al, 2010).…”

Section: Mineral Composition Of the <02 MM Fraction Of Other Rocksmentioning

confidence: 75%

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Thermal History of Lower Paleozoic Rocks on the Peri-Tornquist Margin of the East European Craton (Podolia, Ukraine) Inferred from Combined XRD, K-Ar, and AFT Data

Środoń

Paszkowski

Drygant

et al. 2013

Clays and clay miner.

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The Upper SilurianÀLower Devonian section of the Dniester gorge in Podolia and samples from boreholes located S and N of this area were studied in order to reconstruct the thermal history of Lower Paleozoic sedimentary rocks in the Dniester segment of the Peri-Tornquist margin of the East European Craton which is the most eastern part of a major shale-gas target in Europe. X-ray diffraction data for illite-smectite from shales and carbonates indicate very advanced diagenesis and maximum paleotemperatures of~200ºC, higher than interpreted from the 'conodont alteration index' (CAI) data. Diagenesis of the Devonian section is slightly less advanced than that of the underlying Silurian section, indicating that it is a regional feature and the result of burial. The regional distribution of the diagenetic grade based on illite matches well with the pattern established from the CAI data. K-Ar dating of illitesmectite from Silurian bentonites and shales gave a consistent set of dates ranging from 390 to 312 Ma. To explain such advanced levels of diagenesis and such K-Ar dates, the extension of the Carboniferous foreland basin (which today is only preserved to the NW of L'viv) toward the SE on the craton margin has to be assumed. The diagenetic zonation pattern of the Carboniferous coals supports this hypothesis. The Carboniferous cover may have been either sedimentary or partially tectonic (Variscan intracratonic duplexes) in origin and the thickness, necessary for the observed level of diagenesis, may have been reduced by an elevated heat flow along the major tectonic zone at the edge of the craton (TESZ). The presence of such cover is confirmed by completely reset Cretaceous apatite fission track (AFT) ages of the Silurian bentonites. The AFT dates also imply a Tertiary heating event in the area.The 10 Å clay mineral present in the dolomitic part of the profile (Silurian), both in bentonites and in other rocks, is aluminoceladonite or intermediate between illite and aluminoceladonite, while in the Devonian shale section only illite was documented. Chlorite is also common in the studied rocks and is at least partially authigenic. It is non-expandable in the samples from boreholes, while often expandable to variable extents in the samples from outcrops, which also contain goethite. Such variation in chlorite is attributed to contemporary weathering.

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Section: Mineral Composition Of the <02 MM Fraction Of Other Rocksmentioning

confidence: 75%

“…The sample was, thus, identified as c l o s e t o t h e e n d -m e m b e r a l u m i n o c e l a d o n i t e (9.885À9.887 Å :Seifert, 1968;Drits et al, 2010).…”

mentioning

confidence: 99%

Thermal History of Lower Paleozoic Rocks on the Peri-Tornquist Margin of the East European Craton (Podolia, Ukraine) Inferred from Combined XRD, K-Ar, and AFT Data

Środoń

Paszkowski

Drygant

et al. 2013

Clays and clay miner.

View full text Add to dashboard Cite

show abstract

“…The b angle was chosen at 96.1°f or smectite and beidellite (Gournis et al, 2008) and 101.6°for illite (Drits et al, 2010). The calculated molar volumes are reported in Table 5.…”

Section: Analysis and Characterisation Of The Samplesmentioning

confidence: 99%

Thermodynamic properties of illite, smectite and beidellite by calorimetric methods: Enthalpies of formation, heat capacities, entropies and Gibbs free energies of formation

Gailhanou

Blanc

Rogez

et al. 2012

Geochimica et Cosmochimica Acta

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“…4.2 developed by Bruker AXS, and the effects of preferred orientation and particle size were optimized. The targeted minerals were quartz [22], calcite [23], dolomite [24], albite [25], anorthite [26], anorthoclase [27], orthoclase [28], microcline [29], pyrite [30], biotite [31], sericite [32], illite [33], chlorite [34], as well as the internal standard corundum [35]. The effects of preferred orientation were considered for diffraction from the basal space [0 0 l] orientation of feldspar and clay minerals.…”

Section: Powder X-ray Diffraction Analysis (Xrd) -Rietveld Analysismentioning

confidence: 99%

Influence of mineral composition of siliceous rock on its volume change

Igarashi

Maruyama

Nishioka

et al. 2015

Construction and Building Materials

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Factors responsible for crystal-chemical variations in the solid solutions from illite to aluminoceladonite and from glauconite to celadonite

Cited by 125 publications

References 28 publications

Thermal History of Lower Paleozoic Rocks on the Peri-Tornquist Margin of the East European Craton (Podolia, Ukraine) Inferred from Combined XRD, K-Ar, and AFT Data

Thermal History of Lower Paleozoic Rocks on the Peri-Tornquist Margin of the East European Craton (Podolia, Ukraine) Inferred from Combined XRD, K-Ar, and AFT Data

Thermodynamic properties of illite, smectite and beidellite by calorimetric methods: Enthalpies of formation, heat capacities, entropies and Gibbs free energies of formation

Influence of mineral composition of siliceous rock on its volume change

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